I am very confused about this offer. Can you order any of the alternatives, any size, any format etc. for £7? Do you go to the site to place your order, then personalise, then pay with your voucher?
Thanks for getting in touch.
You can see all the options but clicking the green Buy Now button on the top right-hand side.
After purchasing for your correct size, follow the link on your voucher and follow the instructions. You'll then redeem your voucher but postage and packaging is paid directly to Colour House Print when confirming your order with them.